Canon PIXMA iP4500 Series Quick Start Manual page 13

If You Print Mainly on Plain Paper
You can load plain paper of the same size in both paper sources, and set the printer driver to
automatically switch the paper source when either paper source runs out of paper during
printing.
(A) Rear Tray: Load plain paper
(B) Cassette: Load plain paper
Choosing the paper source to match the location of the printer
You can choose to use only either the Rear Tray or Cassette according to the location of the
printer. For example, if you intend to install the printer in a small place, such as on a shelf with
minimal space, you can use just the Cassette for printing.
(A)
Before Using the Printer
(B)
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